EP0712998A1 - Switching valve for a circuit for injecting air into internal combustion engine exhaust - Google Patents

Switching valve for a circuit for injecting air into internal combustion engine exhaust Download PDF

Info

Publication number
EP0712998A1
EP0712998A1 EP19950402504 EP95402504A EP0712998A1 EP 0712998 A1 EP0712998 A1 EP 0712998A1 EP 19950402504 EP19950402504 EP 19950402504 EP 95402504 A EP95402504 A EP 95402504A EP 0712998 A1 EP0712998 A1 EP 0712998A1
Authority
EP
European Patent Office
Prior art keywords
chamber
valve
air
valve according
membrane
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP19950402504
Other languages
German (de)
French (fr)
Other versions
EP0712998B1 (en
Inventor
Bernard Lafleur
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Johnson Controls Automotive Electronics SAS
Original Assignee
Sagem SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Sagem SA filed Critical Sagem SA
Publication of EP0712998A1 publication Critical patent/EP0712998A1/en
Application granted granted Critical
Publication of EP0712998B1 publication Critical patent/EP0712998B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
    • F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
    • F01N3/18—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control
    • F01N3/22—Control of additional air supply only, e.g. using by-passes or variable air pump drives
    • F01N3/227—Control of additional air supply only, e.g. using by-passes or variable air pump drives using pneumatically operated valves, e.g. membrane valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
    • F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
    • F01N3/18—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control
    • F01N3/22—Control of additional air supply only, e.g. using by-passes or variable air pump drives
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/7722—Line condition change responsive valves

Definitions

  • the present invention relates to a cut-off valve for an air injection circuit to the exhaust of an internal combustion engine.
  • this function of injecting air into the exhaust has been achieved using an air pump that draws outside air, either through an independent air filter or via the engine intake air filter, and discharging this air into the exhaust manifold via a cut-off valve and a non-return valve.
  • the cut-off valve was intended to close the circuit when the pump was not in operation, and the non-return valve was intended to prevent backflow into the exhaust gas circuit when the oscillating pressure in the manifold exhaust pressure became higher than the pump discharge pressure.
  • the shut-off valve itself was a diaphragm valve which was controlled by a solenoid valve taking its negative pressure from the intake manifold downstream of the butterfly valve.
  • the solenoid valve was itself controlled by the same electrical relay that controlled the operation of the air pump.
  • the present invention aims to overcome these drawbacks.
  • the cutoff valve according to the invention therefore has the advantage over that of the prior art of depending only on the air injection pump. It is in fact directly controlled by the discharge pressure of this pump and not by the vacuum prevailing in the intake manifold via a solenoid valve, itself requiring an electrical supply. This results in much greater simplicity and therefore lower cost and less risk of failure for the air injection circuit to the exhaust.
  • said means for admitting air into the first chamber comprise a passage formed between the first and second chambers.
  • a single duct connects the air pump to the valve of the invention.
  • said first and second chambers can be adjacent and separated by a wall, said passage consisting of an orifice formed in said wall.
  • Said passage can also be formed in the valve stem.
  • the passage may open axially into the first chamber, its orifice being, at rest, blocked by a closure member, for example a second membrane, urged by a spring.
  • the first mentioned membrane can be biased by a spring on its face opposite to said first chamber.
  • said first chamber can be connected to said third chamber by a discharge duct, for example formed in the thickness of the wall of the housing, and on which can be placed a calibrated check valve.
  • a discharge duct for example formed in the thickness of the wall of the housing, and on which can be placed a calibrated check valve.
  • the air intake means in the first chamber comprise an air supply duct coming from the air pump.
  • valve according to the invention may comprise a fourth chamber in said housing, separated from the third chamber by a non-return valve, the air outlet means of the third chamber comprising said non-return valve, said fourth chamber, and air outlet means from said fourth chamber towards the exhaust manifold of said engine.
  • the simplified cut-off valve according to the invention is therefore brought together in a single unit, as well as the check valve of the prior art.
  • the non-return valve may in particular comprise a substantially circular membrane fixed in its center to a support pierced with orifices and pressed against said support by an elastic blade.
  • FIG. 1 An air pump 1 driven by an electric motor 2. This pump receives outside air through a duct 3, either from an individual air filter or from the main intake air filter of the engine for which this circuit is intended.
  • the pump 1 delivers pressurized air through the pipe 4.
  • This pipe 4 is divided into two pipes 5 and 6, both connected to the valve 7 according to the invention.
  • the outlet of this valve is connected by a conduit 8 to the air injection manifold in the engine exhaust manifold.
  • the valve 7, shown in section in FIG. 2, comprises a valve body, or housing, 9 delimiting a plurality of chambers.
  • a first chamber 10 is formed in the body 9 and delimited by a wall 11 and a membrane 12.
  • the face of the membrane 12, external to the chamber 10, is protected by a cover 13, in which are formed vent holes 14.
  • An inlet 15 in the chamber 10 is formed by an inlet duct 16, to which the tube 5 can be fixed, for example using a collar.
  • the wall 11 forms a guide tube 17 in which can slide a valve stem 18 19.
  • the stem 18 is fixed to the center of the membrane 12.
  • a helical spring 20 arranged around the guide tube 12, between the wall 11 and the valve 19, pushes the latter away from this wall.
  • the valve 19 cooperates with a valve seat 21, formed at the periphery of an orifice 22, drilled in the center of a disc 23, fixed in any suitable manner in the body 9.
  • the disc 23 delimits with this body 9 and the wall 11 a second chamber 24.
  • An inlet orifice 25 in the chamber 24 is connected to an inlet duct 26, to which the duct 6 can be connected, for example by means of a collar.
  • the orifice 22 forms the exit from the chamber 24.
  • the body 9 and the disc 23 define a third chamber 27 with a support 28 for the valve.
  • the support 28 is fixed to the lower part of the main body 9 by crimping a secondary body 29 defining, with the support 28, a fourth chamber 30.
  • the fourth chamber 30 corresponds with the third chamber 27, by means of a non-return valve, formed by the support 28 pierced with communication holes, and supporting in its center on the side of the chamber 30, a rubber membrane 31 , pressed against the communication holes of the support 28 by a metal elastic blade 32.
  • a cone 33 also fixed to the central part of the support 28, makes it possible to limit the movement of the membrane 31 and of the spring 32. It is understood that the air passing through the valve can pass from chamber 27 to chamber 30, and not from chamber 30 to chamber 27.
  • a conduit 34 forms the outlet of the chamber, and is provided with an olive 35 and a nut 36, making it possible to connect it to the tube 8 for connection with the exhaust manifold.
  • the pump 1 delivers pressurized air into the ducts 5 and 6.
  • the air discharged into the duct 5 causes an increase in pressure in the chamber 10, and consequently a deformation of the membrane 12 which raises the valve 19 against the action of the spring 20.
  • the valve 31-33 opposes, during operation, the discharge of the exhaust gases from the conduit 8 towards the conduits 5 and 6.
  • valve 7 ′ of the embodiment of FIG. 3 is practically identical to the valve 7, except that the chamber 10 no longer has its intake orifice 15 and its intake duct 16. This orifice is replaced by a orifice 37, formed in the wall 11, separating the first chamber 10 from the chamber 24.
  • the air coming from the pump 1 is then admitted into the chamber 10 via the tube 6, the conduit 26, the chamber 24 and the orifice 37.
  • valve 7 ' is identical to that of valve 7.
  • valve 7 "in FIG. 4 differs from the valves in FIGS. 2 and 3 essentially in that the head and the seat of the valve 19 separating the second and third chambers 24 and 27 respectively, are in this third chamber 27. This valve therefore opens in the opposite direction to those previously described.
  • a cavity is delimited between a flange 40 of the body 9 and a cover 41.
  • the membrane 12 and this cover 41 delimit the first chamber 10 inside this cavity.
  • the stem 42 of the valve is hollow so as to form a passage capable of making the first chamber 10 communicate with the second chamber 24.
  • an axial duct 43 is formed in the stem 42 and opens into the chamber 24 by radial orifices 44 and in the chamber 10 by an axial orifice 45.
  • a second membrane 46 is applied against the orifice 45 by a spring 47 housed in a blind hole 48 of the cover 41. Furthermore, the membrane 12, and consequently the valve 19 of which it is integral and its orifice 45 are also stressed in direction of the membrane 46 by a spring 49.
  • a set of bores 50 places the first chamber 10 in communication with the third chamber 27.
  • a non-return valve 51 housed in the cover 41 and calibrated by a spring 52 prevents any flow from the chamber 27 to the chamber 10.
  • the valve could also just as easily be housed in the body of the housing.
  • the control pressure the valve 19 is brought into the chamber 10 via the chamber 27 and, here, from the conduit 43.
  • this pressure reaches a sufficient threshold, the membrane 46 lets it enter the chamber 10.
  • the membrane 12 then sinks, opening the valve 19.
  • valve 51 prevents the cyclic overpressures occurring in the exhaust manifold from going back into the chamber 10 and thus disturbing the operation of the valve 19.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Toxicology (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Exhaust Gas After Treatment (AREA)
  • Temperature-Responsive Valves (AREA)

Abstract

The pipes (16,26) are connected to the air pump. When pump pressure on the diaphragm (12), acting against the spring (20), lifts the valve (19) off its seat, air is fed into the chamber (27). Air from the chamber (37) is fed to the chamber (30) and the non return valve (28,31,32) then through the pipe (34) to the exhaust system.

Description

La présente invention concerne une vanne de coupure pour circuit d'injection d'air à l'échappement de moteur à combustion interne.The present invention relates to a cut-off valve for an air injection circuit to the exhaust of an internal combustion engine.

On connaît déjà de tels circuits dont la fonction est de prélever de l'air frais extérieur pour l'injecter dans le collecteur d'échappement du moteur à proximité immédiate des soupapes d'échappement. Les gaz d'échappement étant à très haute température, il en résulte un réallumage des hydrocarbures imbrûlés et par conséquent une moindre pollution.Such circuits are already known, the function of which is to take fresh outside air to inject it into the engine exhaust manifold in the immediate vicinity of the exhaust valves. The exhaust gases being at very high temperature, this results in a re-ignition of the unburnt hydrocarbons and consequently less pollution.

Il existe une autre fonction de l'injection d'air à l'échappement. On connaît en effet l'usage de plus en plus courant de pots catalytiques, et on sait que le catalyseur n'est efficace que dans la mesure où il a atteint une certaine température. Or, vu la durée moyenne d'un trajet effectué en véhicule automobile, une grande partie du kilométrage effectué par cette dernière l'est avec un catalyseur froid et donc inefficace. Il a donc été proposé d'injecter dans les cylindres un mélange volontairement trop riche, puis d'injecter de l'air frais dans le collecteur d'échappement de manière à provoquer une sorte de "postcombustion" élevant fortement la température des gaz d'échappement et provoquant par conséquent un réchauffement rapide du pot catalytique. Bien entendu, cette introduction de mélange volontairement trop riche et cette injection d'air à l'échappement ne durent que le temps nécessaire à l'échauffement du catalyseur.There is another function of injecting air into the exhaust. We know in fact the increasingly common use of catalytic converters, and we know that the catalyst is effective only to the extent that it has reached a certain temperature. However, given the average duration of a journey made by motor vehicle, a large part of the mileage made by the latter is with a cold catalyst and therefore ineffective. It has therefore been proposed to inject a deliberately too rich mixture into the cylinders, then to inject fresh air into the exhaust manifold so as to cause a kind of "afterburning" greatly raising the temperature of the exhaust and therefore causing rapid heating of the catalytic converter. Of course, this introduction of a deliberately too rich mixture and this injection of air into the exhaust only last the time necessary for the heating of the catalyst.

Jusqu'à présent cette fonction d'injection d'air à l'échappement était réalisée à l'aide d'une pompe à air prélevant de l'air extérieur, soit par l'intermédiaire d'un filtre à air indépendant, soit par l'intermédiaire du filtre à air d'admission du moteur, et refoulant cet air dans le collecteur d'échappement par l'intermédiaire d'une vanne de coupure et d'une vanne anti-retour. La vanne de coupure était destinée à fermer le circuit lorsque la pompe n'était pas en fonctionnement, et le clapet anti-retour avait pour fonction d'éviter un refoulement dans le circuit des gaz d'échappement lorsque la pression oscillante dans le collecteur d'échappement devenait supérieure à la pression de refoulement de la pompe. La vanne de coupure elle-même était une vanne à membrane qui était commandée par une vanne à solénoïde prélevant sa pression négative sur la tubulure d'admission en aval de la vanne papillon. La vanne à solénoïde était elle-même commandée par l'intermédiaire du même relais électrique qui commandait le fonctionnement de la pompe à air.Until now, this function of injecting air into the exhaust has been achieved using an air pump that draws outside air, either through an independent air filter or via the engine intake air filter, and discharging this air into the exhaust manifold via a cut-off valve and a non-return valve. The cut-off valve was intended to close the circuit when the pump was not in operation, and the non-return valve was intended to prevent backflow into the exhaust gas circuit when the oscillating pressure in the manifold exhaust pressure became higher than the pump discharge pressure. The shut-off valve itself was a diaphragm valve which was controlled by a solenoid valve taking its negative pressure from the intake manifold downstream of the butterfly valve. The solenoid valve was itself controlled by the same electrical relay that controlled the operation of the air pump.

Un tel circuit était par conséquent d'une grande complexité et donc, d'une part coûteux et d'autre part sujet à des pannes.Such a circuit was therefore very complex and therefore, on the one hand expensive and on the other hand subject to breakdowns.

La présente invention vise à pallier ces inconvénients.The present invention aims to overcome these drawbacks.

A cet effet, l'invention a pour objet une vanne de coupure pour circuit d'injection d'air à l'échappement de moteur à combustion interne, caractérisée par le fait qu'elle comprend :

  • un boîtier ;
  • une membrane délimitant une première chambre dans ledit boîtier ;
  • des moyens d'admission d'air dans ladite première chambre à partir d'une pompe à air ;
  • une deuxième chambre dans ledit boîtier ;
  • des moyens d'admission d'air dans ladite deuxième chambre à partir de ladite pompe à air ;
  • une troisième chambre dans ledit boîtier ;
  • des moyens de sortie d'air de ladite troisième chambre en direction du collecteur d'échappement du moteur ; et
  • une soupape commandée par ladite membrane pour mettre en communication lesdites deuxième et troisième chambre lorsque la pompe à air est en fonctionnement.
To this end, the subject of the invention is a cut-off valve for an air injection circuit at the exhaust of an internal combustion engine, characterized in that it comprises:
  • a housing ;
  • a membrane defining a first chamber in said housing;
  • means for admitting air into said first chamber from an air pump;
  • a second chamber in said housing;
  • means for admitting air into said second chamber from said air pump;
  • a third chamber in said housing;
  • air outlet means from said third chamber towards the engine exhaust manifold; and
  • a valve controlled by said membrane for communicating said second and third chambers when the air pump is in operation.

La vanne de coupure selon l'invention présente donc par rapport à celle de l'art antérieur l'avantage de ne dépendre que de la pompe d'injection d'air. Elle est en effet directement commandée par la pression de refoulement de cette pompe et non pas par la dépression régnant dans la tubulure d'admission par l'intermédiaire d'une vanne à solénoïde, nécessitant elle-même une alimentation électrique. Il en résulte une beaucoup plus grande simplicité et donc un coût inférieur et de moindres risques de panne pour le circuit d'injection d'air à l'échappement.The cutoff valve according to the invention therefore has the advantage over that of the prior art of depending only on the air injection pump. It is in fact directly controlled by the discharge pressure of this pump and not by the vacuum prevailing in the intake manifold via a solenoid valve, itself requiring an electrical supply. This results in much greater simplicity and therefore lower cost and less risk of failure for the air injection circuit to the exhaust.

Dans un premier mode de réalisation, lesdits moyens d'admission d'air dans la première chambre comprennent passage formé entre les première et deuxième chambres.In a first embodiment, said means for admitting air into the first chamber comprise a passage formed between the first and second chambers.

Dans ce cas, un seul conduit relie la pompe à air à la vanne de l'invention.In this case, a single duct connects the air pump to the valve of the invention.

Plus particulièrement, lesdites première et deuxième chambres peuvent être adjacentes et séparées par une paroi, ledit passage étant constitué d'un orifice formé dans ladite paroi.More particularly, said first and second chambers can be adjacent and separated by a wall, said passage consisting of an orifice formed in said wall.

Ledit passage peut également être formé dans la tige de la soupape.Said passage can also be formed in the valve stem.

Dans ce cas, le passage peut déboucher axialement dans la première chambre, son orifice étant, au repos, bouché par un organe de bouchage, par exemple une deuxième membrane, sollicité par un ressort.In this case, the passage may open axially into the first chamber, its orifice being, at rest, blocked by a closure member, for example a second membrane, urged by a spring.

La première membrane citée peut être sollicitée par un ressort sur sa face opposée à ladite première chambre.The first mentioned membrane can be biased by a spring on its face opposite to said first chamber.

Plus particulièrement, ladite première chambre peut être reliée à ladite troisième chambre par un conduit d'évacuation, par exemple formé dans l'épaisseur de la paroi du boîtier, et sur lequel peut être placé un clapet anti-retour taré.More particularly, said first chamber can be connected to said third chamber by a discharge duct, for example formed in the thickness of the wall of the housing, and on which can be placed a calibrated check valve.

Dans un autre mode de réalisation, les moyens d'admission d'air dans la première chambre comprennent un conduit d'amenée d'air en provenance de la pompe à air.In another embodiment, the air intake means in the first chamber comprise an air supply duct coming from the air pump.

Plus particulièrement, la vanne selon l'invention peut comprendre une quatrième chambre dans ledit boîtier, séparée de la troisième chambre par un clapet anti-retour, les moyens de sortie d'air de la troisième chambre comprenant ledit clapet anti-retour, ladite quatrième chambre, et des moyens de sortie d'air de ladite quatrième chambre en direction du collecteur d'échappement dudit moteur.More particularly, the valve according to the invention may comprise a fourth chamber in said housing, separated from the third chamber by a non-return valve, the air outlet means of the third chamber comprising said non-return valve, said fourth chamber, and air outlet means from said fourth chamber towards the exhaust manifold of said engine.

Dans ce mode de réalisation, on réunit par conséquent en une seule unité, la vanne de coupure simplifiée selon l'invention, ainsi que le clapet anti-retour de l'art antérieur.In this embodiment, the simplified cut-off valve according to the invention is therefore brought together in a single unit, as well as the check valve of the prior art.

Le clapet anti-retour peut notamment comprendre une membrane sensiblement circulaire fixée en son centre à un support percé d'orifices et plaquée contre ledit support par une lame élastique.The non-return valve may in particular comprise a substantially circular membrane fixed in its center to a support pierced with orifices and pressed against said support by an elastic blade.

On décrira maintenant à titre d'exemples non limitatifs des modes de réalisation particuliers de l'invention, en référence aux dessins annexés dans lesquels :

  • la figure 1 représente un circuit d'injection d'air à l'échappement comprenant une vanne selon l'invention,
  • la figure 2 représente cette vanne vue en coupe axiale,
  • la figure 3 représente un autre mode de réalisation de cette vanne, et
  • la figure 4 en représente encore un autre mode de réalisation.
There will now be described, by way of nonlimiting examples, particular embodiments of the invention, with reference to the appended drawings in which:
  • FIG. 1 represents an exhaust air injection circuit comprising a valve according to the invention,
  • FIG. 2 represents this valve seen in axial section,
  • FIG. 3 represents another embodiment of this valve, and
  • Figure 4 shows yet another embodiment.

On voit sur la figure 1 une pompe à air 1 entraînée par un moteur électrique 2. Cette pompe reçoit de l'air extérieur par un conduit 3, provenant soit d'un filtre à air individuel, soit du filtre à air principal d'admission du moteur auquel ce circuit est destiné.We see in Figure 1 an air pump 1 driven by an electric motor 2. This pump receives outside air through a duct 3, either from an individual air filter or from the main intake air filter of the engine for which this circuit is intended.

La pompe 1 refoule de l'air sous pression par le conduit 4. Ce conduit 4 se divise en deux conduits 5 et 6, tous deux reliés à la vanne 7 selon l'invention. La sortie de cette vanne est reliée par un conduit 8 à la rampe d'injection d'air dans le collecteur d'échappement du moteur.The pump 1 delivers pressurized air through the pipe 4. This pipe 4 is divided into two pipes 5 and 6, both connected to the valve 7 according to the invention. The outlet of this valve is connected by a conduit 8 to the air injection manifold in the engine exhaust manifold.

La vanne 7, représentée en coupe à la figure 2, comporte un corps de vanne, ou boîtier, 9 délimitant une pluralité de chambres.The valve 7, shown in section in FIG. 2, comprises a valve body, or housing, 9 delimiting a plurality of chambers.

En premier lieu, une première chambre 10 est formée dans le corps 9 et délimitée par une paroi 11 et une membrane 12. La face de la membrane 12, extérieure à la chambre 10, est protégée par un capot 13, dans lequel sont formés des trous 14 de mise à l'air libre. Un orifice d'entrée 15 dans la chambre 10 est formé par un conduit d'entrée 16, sur lequel le tube 5 peut être fixé, par exemple à l'aide d'un collier.Firstly, a first chamber 10 is formed in the body 9 and delimited by a wall 11 and a membrane 12. The face of the membrane 12, external to the chamber 10, is protected by a cover 13, in which are formed vent holes 14. An inlet 15 in the chamber 10 is formed by an inlet duct 16, to which the tube 5 can be fixed, for example using a collar.

Dans sa partie centrale, la paroi 11 forme un tube de guidage 17 dans lequel peut coulisser une tige 18 de soupape 19. A son extrémité opposée à la soupape 19, la tige 18 est fixée au centre de la membrane 12. Un ressort 20 hélicoïdal, disposé autour du tube de guidage 12, entre la paroi 11 et la soupape 19, repousse cette dernière à l'opposé de cette paroi.In its central part, the wall 11 forms a guide tube 17 in which can slide a valve stem 18 19. At its end opposite to the valve 19, the stem 18 is fixed to the center of the membrane 12. A helical spring 20 , arranged around the guide tube 12, between the wall 11 and the valve 19, pushes the latter away from this wall.

La soupape 19 coopère avec un siège de soupape 21, formé à la périphérie d'un orifice 22, percé au centre d'un disque 23, fixé de toute manière convenable dans le corps 9. Le disque 23 délimite avec ce corps 9 et la paroi 11 une deuxième chambre 24. Un orifice d'admission 25 dans la chambre 24 est relié à un conduit d'admission 26, sur lequel peut être connecté le conduit 6, par exemple au moyen d'un collier. L'orifice 22 forme la sortie de la chambre 24.The valve 19 cooperates with a valve seat 21, formed at the periphery of an orifice 22, drilled in the center of a disc 23, fixed in any suitable manner in the body 9. The disc 23 delimits with this body 9 and the wall 11 a second chamber 24. An inlet orifice 25 in the chamber 24 is connected to an inlet duct 26, to which the duct 6 can be connected, for example by means of a collar. The orifice 22 forms the exit from the chamber 24.

Le corps 9 et le disque 23 délimitent une troisième chambre 27 avec un support 28 de clapet. Le support 28 est fixé à la partie inférieure du corps principal 9 par sertissage d'un corps secondaire 29 délimitant, avec le support 28, une quatrième chambre 30.The body 9 and the disc 23 define a third chamber 27 with a support 28 for the valve. The support 28 is fixed to the lower part of the main body 9 by crimping a secondary body 29 defining, with the support 28, a fourth chamber 30.

La quatrième chambre 30 correspond avec la troisième chambre 27, par l'intermédiaire d'un clapet anti-retour, formé du support 28 percé de trous de communication, et supportant dans son centre du côté de la chambre 30, une membrane en caoutchouc 31, plaquée contre les trous de communication du support 28 par une lame élastique métallique 32. Un cône 33, également fixé à la partie centrale du support 28, permet de limiter le débattement de la membrane 31 et du ressort 32. On comprend que l'air traversant la vanne peut passer de la chambre 27 à la chambre 30, et non pas de la chambre 30 à la chambre 27.The fourth chamber 30 corresponds with the third chamber 27, by means of a non-return valve, formed by the support 28 pierced with communication holes, and supporting in its center on the side of the chamber 30, a rubber membrane 31 , pressed against the communication holes of the support 28 by a metal elastic blade 32. A cone 33, also fixed to the central part of the support 28, makes it possible to limit the movement of the membrane 31 and of the spring 32. It is understood that the air passing through the valve can pass from chamber 27 to chamber 30, and not from chamber 30 to chamber 27.

Un conduit 34 forme la sortie de la chambre, et est muni d'une olive 35 et d'un écrou 36, permettant de le relier au tube 8 de liaison avec le collecteur d'échappement.A conduit 34 forms the outlet of the chamber, and is provided with an olive 35 and a nut 36, making it possible to connect it to the tube 8 for connection with the exhaust manifold.

Lorsque le moteur 2 est mis en marche, la pompe 1 en refoule de l'air sous pression dans les conduits 5 et 6. L'air refoulé dans le conduit 5 provoque une augmentation de pression dans la chambre 10, et par conséquent une déformation de la membrane 12 qui vient soulever la soupape 19 contre l'action du ressort 20.When the motor 2 is started, the pump 1 delivers pressurized air into the ducts 5 and 6. The air discharged into the duct 5 causes an increase in pressure in the chamber 10, and consequently a deformation of the membrane 12 which raises the valve 19 against the action of the spring 20.

La soupape 19 étant ainsi ouverte, l'air refoulé dans le conduit 6 est introduit dans la chambre 24, puis par l'orifice 22, dans la chambre 27. Cet air traverse ensuite le clapet anti-retour 31-33 pour être refoulé dans la chambre 30, et de là, dans le conduit 8.With the valve 19 thus open, the air discharged into the conduit 6 is introduced into the chamber 24, then through the orifice 22, into the chamber 27. This air then passes through the non-return valve 31-33 to be discharged into chamber 30, and from there into conduit 8.

Le clapet 31-33 s'oppose, en fonctionnement, au refoulement des gaz d'échappement du conduit 8 vers les conduits 5 et 6.The valve 31-33 opposes, during operation, the discharge of the exhaust gases from the conduit 8 towards the conduits 5 and 6.

Lorsque le moteur cesse d'être alimenté, la pression dans la chambre 10 est ramenée à son niveau normal, de sorte que la soupape 19 se ferme, la vanne 7 remplissant ainsi son rôle de vanne de coupure.When the engine stops being supplied, the pressure in the chamber 10 is brought back to its normal level, so that the valve 19 closes, the valve 7 thus fulfilling its role of cut-off valve.

La vanne 7' du mode de réalisation de la figure 3 est pratiquement identique à la vanne 7, si ce n'est que la chambre 10 ne comporte plus son orifice d'admission 15 et son conduit d'admission 16. Cet orifice est remplacé par un orifice 37, formé dans la paroi 11, séparant la première chambre 10 de la chambre 24.The valve 7 ′ of the embodiment of FIG. 3 is practically identical to the valve 7, except that the chamber 10 no longer has its intake orifice 15 and its intake duct 16. This orifice is replaced by a orifice 37, formed in the wall 11, separating the first chamber 10 from the chamber 24.

L'air provenant de la pompe 1 est alors admis dans la chambre 10 par l'intermédiaire du tube 6, du conduit 26, de la chambre 24 et de l'orifice 37.The air coming from the pump 1 is then admitted into the chamber 10 via the tube 6, the conduit 26, the chamber 24 and the orifice 37.

A cette différence près, le fonctionnement de la vanne 7' est identique à celui de la vanne 7.With this difference, the operation of valve 7 'is identical to that of valve 7.

La vanne 7" de la figure 4 diffère des vannes des figures 2 et 3 essentiellement par le fait que la tête et le siège de la soupape 19 séparant les deuxième et troisième chambres 24 et 27 respectivement, se trouvent dans cette troisième chambre 27. Cette soupape s'ouvre donc dans le sens inverse de celles précédemment décrites.The valve 7 "in FIG. 4 differs from the valves in FIGS. 2 and 3 essentially in that the head and the seat of the valve 19 separating the second and third chambers 24 and 27 respectively, are in this third chamber 27. This valve therefore opens in the opposite direction to those previously described.

Dans ce mode de réalisation, une cavité est délimitée entre un flasque 40 du corps 9 et un couvercle 41. La membrane 12 et ce couvercle 41 délimitent la première chambre 10 à l'intérieur de cette cavité.In this embodiment, a cavity is delimited between a flange 40 of the body 9 and a cover 41. The membrane 12 and this cover 41 delimit the first chamber 10 inside this cavity.

La tige 42 de la soupape est creuse de manière à former un passage apte à faire communiquer la première chambre 10 avec la deuxième chambre 24. A cet effet, un conduit axial 43 est formé dans la tige 42 et débouche dans la chambre 24 par des orifices radiaux 44 et dans la chambre 10 par un orifice axial 45.The stem 42 of the valve is hollow so as to form a passage capable of making the first chamber 10 communicate with the second chamber 24. For this purpose, an axial duct 43 is formed in the stem 42 and opens into the chamber 24 by radial orifices 44 and in the chamber 10 by an axial orifice 45.

Une deuxième membrane 46 est appliquée contre l'orifice 45 par un ressort 47 logé dans un trou borgne 48 du couvercle 41. Par ailleurs, la membrane 12, et par conséquent la soupape 19 dont elle est solidaire et son orifice 45 sont également sollicités en direction de la membrane 46 par un ressort 49.A second membrane 46 is applied against the orifice 45 by a spring 47 housed in a blind hole 48 of the cover 41. Furthermore, the membrane 12, and consequently the valve 19 of which it is integral and its orifice 45 are also stressed in direction of the membrane 46 by a spring 49.

Un ensemble de perçages 50 met en communication la première chambre 10 avec la troisième chambre 27. Un clapet anti-retour 51, logé dans le couvercle 41 et taré par un ressort 52 empêche tout écoulement de la chambre 27 à la chambre 10.A set of bores 50 places the first chamber 10 in communication with the third chamber 27. A non-return valve 51, housed in the cover 41 and calibrated by a spring 52 prevents any flow from the chamber 27 to the chamber 10.

Le clapet pourrait d'ailleurs tout aussi bien être logé dans le corps du boîtier.The valve could also just as easily be housed in the body of the housing.

Comme dans le mode de réalisation de la figure 3, la pression de commande la soupape 19 est amenée dans la chambre 10 par l'intermédiaire de la chambre 27 et, ici, du conduit 43. Lorsque cette pression atteint un seuil suffisant, la membrane 46 la laisse pénétrer dans la chambre 10. La membrane 12 s'enfonce alors, ouvrant la soupape 19.As in the embodiment of FIG. 3, the control pressure the valve 19 is brought into the chamber 10 via the chamber 27 and, here, from the conduit 43. When this pressure reaches a sufficient threshold, the membrane 46 lets it enter the chamber 10. The membrane 12 then sinks, opening the valve 19.

Lorsque la pression baisse dans la chambre 27, la membrane 12 remonte et ferme ainsi la soupape 19, en chassant dans la chambre 27 une partie de l'air contenu dans la chambre 10, par l'intermédiaire du clapet 51.When the pressure drops in the chamber 27, the membrane 12 rises and thus closes the valve 19, by expelling into the chamber 27 part of the air contained in the chamber 10, by means of the valve 51.

Inversement, le clapet 51 empêche les surpressions cycliques se produisant dans le collecteur d'échappement de remonter dans la chambre 10 et de perturber ainsi le fonctionnement de la soupape 19.Conversely, the valve 51 prevents the cyclic overpressures occurring in the exhaust manifold from going back into the chamber 10 and thus disturbing the operation of the valve 19.

Claims (13)

Vanne de coupure pour circuit d'injection d'air à l'échappement de moteur à combustion interne, caractérisée par le fait qu'elle comprend : - un boîtier (9, 29) ; - une membrane (12) délimitant une première chambre (10) dans ledit boîtier ; - des moyens (16 ; 37; 43) d'admission d'air dans ladite première chambre à partir d'une pompe à air (1) ; - une deuxième chambre (24) dans ledit boîtier ; - des moyens (26) d'admission d'air dans ladite deuxième chambre à partir de ladite pompe à air ; - une troisième chambre (27) dans ledit boîtier ; - des moyens de sortie d'air de ladite troisième chambre en direction du collecteur d'échappement dudit moteur ; et - une soupape (19) commandée par ladite membrane pour mettre en communication lesdites deuxième et troisième chambres lorsque la pompe à air est en fonctionnement. Cut-off valve for air injection circuit to the exhaust of an internal combustion engine, characterized in that it comprises: - a housing (9, 29); - a membrane (12) delimiting a first chamber (10) in said housing; - means (16; 37; 43) for admitting air into said first chamber from an air pump (1); - a second chamber (24) in said housing; - means (26) for admitting air into said second chamber from said air pump; - a third chamber (27) in said housing; - air outlet means from said third chamber towards the exhaust manifold of said engine; and - a valve (19) controlled by said membrane for placing said second and third chambers in communication when the air pump is in operation. Vanne selon la revendication 1, dans lesdits moyens d'admission d'air dans ladite première chambre comprennent un passage (37; 43) entre lesdites première et deuxième chambre.Valve according to claim 1, in said air intake means in said first chamber comprises a passage (37; 43) between said first and second chamber. Vanne selon la revendication 2, dans laquelle lesdites première et deuxième chambres sont adjacentes et séparées par une paroi (11), ledit passage (37) étant constitué d'un orifice formé dans ladite paroi.A valve according to claim 2, wherein said first and second chambers are adjacent and separated by a wall (11), said passage (37) consisting of an orifice formed in said wall. Vanne selon la revendication 2, dans laquelle ledit passage (43) est formé dans la tige de la soupape.The valve of claim 2, wherein said passage (43) is formed in the valve stem. Vanne selon la revendication 4, dans laquelle ledit passage débouche axialement dans la première chambre, son orifice étant, au repos, bouché par un organe de bouchage (46) sollicité par un ressort (47).Valve according to claim 4, in which said passage opens axially into the first chamber, its orifice being, at rest, blocked by a plugging member (46) biased by a spring (47). Vanne selon la revendication 5, dans laquelle ledit organe de bouchage comprend une deuxième membrane.The valve of claim 5, wherein said plugging member comprises a second membrane. Vanne selon l'une quelconque des revendications 4 à 6, dans laquelle ladite membrane est sollicitée par un ressort sur sa face opposée à ladite première chambre.Valve according to any one of Claims 4 to 6, in which the said membrane is biased by a spring on its face opposite to the said first chamber. Vanne selon l'une quelconque des revendications 4 à 7, dans laquelle ladite première chambre est reliée à ladite troisième chambre par un conduit d'évacuation (50).A valve according to any of claims 4 to 7, wherein said first chamber is connected to said third chamber by a discharge conduit (50). Vanne selon la revendication 8, dans laquelle un clapet anti-retour taré (51, 52) est disposé sur ledit conduit d'évacuation.A valve according to claim 8, in which a calibrated non-return valve (51, 52) is disposed on said discharge pipe. Vanne selon l'une quelconque des revendications 8 et 9, dans laquelle ledit conduit d'évacuation est formé dans l'épaisseur de la paroi du boîtier.A valve according to any of claims 8 and 9, wherein said discharge conduit is formed in the thickness of the wall of the housing. Vanne selon la revendication 1, dans laquelle lesdits moyens d'admission d'air dans la première chambre comprennent un conduit (16) d'amenée d'air en provenance de la pompe à air.Valve according to claim 1, in which said means for admitting air into the first chamber comprise a duct (16) for supplying air from the air pump. Vanne selon l'une quelconque des revendications 1, 2 et 11, comprenant une quatrième chambre (30) dans ledit boîtier, séparée de la troisième chambre par un clapet anti-retour (31-33), les moyens de sortie d'air de la troisième chambre comprenant ledit clapet anti-retour, ladite quatrième chambre, et des moyens (34) de sortie d'air de ladite quatrième chambre en direction du collecteur d'échappement dudit moteur.Valve according to any one of claims 1, 2 and 11, comprising a fourth chamber (30) in said housing, separated from the third chamber by a non-return valve (31-33), the air outlet means of the third chamber comprising said non-return valve, said fourth chamber, and means (34) for exiting air from said fourth chamber towards the exhaust manifold of said engine. Vanne selon la revendication 12, dans laquelle ledit clapet anti-retour comprend une membrane (31) sensiblement circulaire fixée en son centre à un support (28) percé d'orifices et plaquée contre ledit support par une lame élastique (32).Valve according to claim 12, in which said non-return valve comprises a substantially circular membrane (31) fixed in its center to a support (28) pierced with orifices and pressed against said support by an elastic blade (32).
EP19950402504 1994-11-17 1995-11-09 Switching valve for a circuit for injecting air into internal combustion engine exhaust Expired - Lifetime EP0712998B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9413757 1994-11-17
FR9413757A FR2727156B1 (en) 1994-11-17 1994-11-17 CUT-OFF VALVE FOR AIR INJECTION CIRCUIT TO EXHAUST OF INTERNAL COMBUSTION ENGINE

Publications (2)

Publication Number Publication Date
EP0712998A1 true EP0712998A1 (en) 1996-05-22
EP0712998B1 EP0712998B1 (en) 2003-03-05

Family

ID=9468876

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19950402504 Expired - Lifetime EP0712998B1 (en) 1994-11-17 1995-11-09 Switching valve for a circuit for injecting air into internal combustion engine exhaust

Country Status (5)

Country Link
US (1) US5699664A (en)
EP (1) EP0712998B1 (en)
JP (1) JP3665117B2 (en)
DE (1) DE69529795T2 (en)
FR (1) FR2727156B1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2310479A (en) * 1996-02-24 1997-08-27 Alco Valves Ltd Actuator controlled valve
US7086636B2 (en) 2002-07-02 2006-08-08 Borgwarner Inc. Gaseous fluid metering valve
US7607638B2 (en) 2005-03-08 2009-10-27 Borgwarner Inc. EGR valve having rest position

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2308989B (en) * 1996-01-12 1997-11-19 Steven Valisko Exhaust manifold device
GB2344614B (en) * 1998-12-11 2000-11-08 Steven Valisko Exhaust manifold device
DE19918471A1 (en) * 1999-04-23 2000-10-26 Bayerische Motoren Werke Ag Secondary air valve for supplying additional air to the exhaust gas flow of an internal combustion engine
FR2794069B1 (en) 1999-05-28 2002-08-09 Valeo Climatisation AIR DISTRIBUTOR OF A HEATING-VENTILATION AND / OR AIR CONDITIONING DEVICE OF A MOTOR VEHICLE
DE10240265B4 (en) * 2002-08-31 2005-09-01 Daimlerchrysler Ag Combination valve
CN100385097C (en) * 2002-12-26 2008-04-30 株式会社三国 Diaphragm air valve and secondary air-controlling device for internal combustion engine
DE102004027413B4 (en) * 2004-06-04 2007-03-29 Hohmann, Jörg Switching device for a hydraulic high-pressure system
CN100422517C (en) * 2006-02-14 2008-10-01 重庆宗申技术开发研究有限公司 Compound air pump
US9291280B2 (en) 2012-07-12 2016-03-22 Fisher Controls International, Llc Actuator apparatus having internal passageways
US9494243B2 (en) * 2013-08-27 2016-11-15 Profire Energy, Inc Temperature control valve actuator assembly
US9458947B2 (en) 2014-02-25 2016-10-04 Fisher Controls International Lc Actuator apparatus with internal tubing and anti-rotation mechanism

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3748855A (en) * 1972-04-20 1973-07-31 Gen Motors Corp Reactor air flow control valve
US3905193A (en) * 1974-02-25 1975-09-16 Gen Motors Corp Air diverter valve and controlling means therefor
US3924408A (en) * 1974-10-31 1975-12-09 Gen Motors Corp Diverter valve and pressure regulator assembly
US4070830A (en) * 1976-10-22 1978-01-31 General Motors Corporation Integral air switching diverter valve
US4141214A (en) * 1977-06-28 1979-02-27 Toyota Jidosha Kogyo Kabushiki Kaisha Exhaust gas cleaning apparatus of an internal combustion engine
EP0496497A1 (en) * 1991-01-19 1992-07-29 Ford Motor Company Limited Gas flow control valve
FR2674288A1 (en) * 1991-03-21 1992-09-25 Borg Warner Automotive Electro SECONDARY AIR CONTROL AND NON-RETURN VALVE.

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3748855A (en) * 1972-04-20 1973-07-31 Gen Motors Corp Reactor air flow control valve
US3905193A (en) * 1974-02-25 1975-09-16 Gen Motors Corp Air diverter valve and controlling means therefor
US3924408A (en) * 1974-10-31 1975-12-09 Gen Motors Corp Diverter valve and pressure regulator assembly
US4070830A (en) * 1976-10-22 1978-01-31 General Motors Corporation Integral air switching diverter valve
US4141214A (en) * 1977-06-28 1979-02-27 Toyota Jidosha Kogyo Kabushiki Kaisha Exhaust gas cleaning apparatus of an internal combustion engine
EP0496497A1 (en) * 1991-01-19 1992-07-29 Ford Motor Company Limited Gas flow control valve
FR2674288A1 (en) * 1991-03-21 1992-09-25 Borg Warner Automotive Electro SECONDARY AIR CONTROL AND NON-RETURN VALVE.

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2310479A (en) * 1996-02-24 1997-08-27 Alco Valves Ltd Actuator controlled valve
US7086636B2 (en) 2002-07-02 2006-08-08 Borgwarner Inc. Gaseous fluid metering valve
US7487789B2 (en) 2002-07-02 2009-02-10 Borgwarner Inc. Gaseous fluid metering valve
US7607638B2 (en) 2005-03-08 2009-10-27 Borgwarner Inc. EGR valve having rest position

Also Published As

Publication number Publication date
FR2727156A1 (en) 1996-05-24
DE69529795T2 (en) 2004-02-12
FR2727156B1 (en) 1996-12-27
DE69529795D1 (en) 2003-04-10
EP0712998B1 (en) 2003-03-05
JPH08232651A (en) 1996-09-10
JP3665117B2 (en) 2005-06-29
US5699664A (en) 1997-12-23

Similar Documents

Publication Publication Date Title
EP0712998B1 (en) Switching valve for a circuit for injecting air into internal combustion engine exhaust
EP0237071B1 (en) Fuel injection device for internal-combustion engines for the injection of two fuels
EP0713036B1 (en) Electromagnetic valve and recirculation circuit for fuel vapour of an internal combustion engine
FR2751242A1 (en) DIESEL ENGINE FILTER AND FUEL DEVICE INCLUDING SUCH A FILTER
FR2599786A1 (en) FUEL PUMPING APPARATUS
FR2687432A1 (en) COMBINED SECONDARY AIR BLOWER VALVE IN INTERNAL COMBUSTION ENGINES WITH A THREE-WAY CATALYST.
EP1312864B1 (en) Dosing device for turbomachine fuel injector
EP0676543B1 (en) Two stage valve for air supply of injectors of internal combustion engines
FR2551134A1 (en) INTERNAL COMBUSTION ENGINE
FR2726043A1 (en) INJECTOR COMPRISING A MAGNETIC VALVE CONTROL FOR INJECTING FUEL INTO THE COMBUSTION CHAMBER OF A DIESEL ENGINE
EP0784749B1 (en) Fuel supply device for motor vehicles with pressure regulation
FR2715434A1 (en) Together to produce a stream of fresh air, used to increase the action of a catalytic converter.
FR2775737A1 (en) FUEL INJECTION DEVICE FOR INTERNAL COMBUSTION ENGINE
FR2517746A1 (en) RECOVERY PUMP DEVICE FOR CARBURETOR
FR2797914A1 (en) FUEL INJECTOR CONTROL VALVE
WO2020229512A1 (en) Fuel vapour emission control device with leak neutralisation
FR2729184A1 (en) VALVE DEVICE, PARTICULARLY FOR AN EXHAUST GAS REINJECTION VALVE OF AN INTERNAL COMBUSTION ENGINE
FR2821387A1 (en) Device for introduction of fuel mixture into two-stroke engine combustion chamber comprises valve and element connected to valve delimiting upper and lower chambers, pressurized air supply and fluidic communication between chambers
FR2773593A1 (en) Fuel injection system of IC engine
FR2843175A1 (en) GAS FUEL INJECTOR
FR2769047A1 (en) PROCEDURE FOR IMPLEMENTING AN INTERNAL COMBUSTION ENGINE AND FUEL INJECTION SYSTEM FOR THE APPLICATION OF THIS PROCESS
FR2509382A1 (en) FUEL INJECTOR FOR EXPLOSION ENGINE
CH178320A (en) Device for supplying fuel to an internal combustion engine.
EP0371841B1 (en) Cooling circuit for an internal-combustion engine of a motor vehicle
EP0091348A1 (en) Governor valve for the simultaneous supply of hydraulic closed and open centre systems

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): DE GB IT

17P Request for examination filed

Effective date: 19961025

17Q First examination report despatched

Effective date: 19991115

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: JOHNSON CONTROLS AUTOMOTIVE ELECTRONICS

AK Designated contracting states

Designated state(s): DE GB IT

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

REF Corresponds to:

Ref document number: 69529795

Country of ref document: DE

Date of ref document: 20030410

Kind code of ref document: P

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)
PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed

Effective date: 20031208

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20141118

Year of fee payment: 20

Ref country code: DE

Payment date: 20141113

Year of fee payment: 20

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: IT

Payment date: 20141113

Year of fee payment: 20

REG Reference to a national code

Ref country code: DE

Ref legal event code: R071

Ref document number: 69529795

Country of ref document: DE

REG Reference to a national code

Ref country code: GB

Ref legal event code: PE20

Expiry date: 20151108

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF EXPIRATION OF PROTECTION

Effective date: 20151108